https://www.irjet.net/archives/V6/i4/IRJET-V6I4712.pdf

1. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 06 Issue: 04 | Apr 2019 www.irjet.net p-ISSN: 2395-0072
© 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 3348
PROFICIENT PUBLIC SUBSTANTIATION OF DATA VERACITY FOR CLOUD
STORAGE THROUGH DUAL PROTECTION
P.Prasanna1, K.sathish2
1Student of Gojan School Of Business and Technology ,Tamil Nadu, India
2Assistant professor of Gojan School Of Business and Technology ,Tamil Nadu, India
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Abstract: The cloud security is one of the important roles in
cloud, here we can preserve our data into cloud storage.
More and more clients would like to store their data to PCS
(public cloud servers) along with the rapid development of
cloud computing. Cloud storage services allow users to
outsource their data to cloud servers to save local data
storage costs. Multiple verification tasks from different users
can be performed efficiently by the auditor and the cloud-
stored data can be updated dynamically. It makes the clients
check whether their outsourced data is kept intact without
downloading the whole data. In our system we are using the
own auditing based on the token generation. Using this key
generation technique compare the key values from original
keys we can find out the changes about the files. Not only
stored also the content will be encrypted in the cloud server.
If anyone try to hack at the cloud end is not possible to break
the two different blocks. The security of our scheme under
the strongest security model. They need first decrypt the files
and also combine the splitted files from three different
locations. This is not possible by anyone. Anyone can
download the files from the server with file owner
permission. At the time of download key generated (code
based key generation) and it will send to the file owner. We
can download the file need to use the key for verification and
some other users want to download file owner permission is
necessary.
Key Words: cloud, PCS, Platform as a service, Secure
Erasure Algorithm.
1. INTRODUCTION
Distributed computing has been envisioned as the
accompanying creation information development (IT) plan
for endeavors, due to its broad summary of unparalleled
inclinations in the IT history: on-ask for self-advantage,
inescapable framework get to, zone self-choosing resource
pooling, quick resource adaptability, use based assessing
and transference of peril. As an aggravating development
with huge consequences, distributed computing is
changing the specific method for how associations use
information advancement. One fundamental piece of this
standpoint changing is that data are being united or
outsourced to the. From customers' view, including
together individuals and IT tries, securing data remotely to
the in a versatile on-ask for strategy bring engaging focal
points: landing of the weight for storage space
organization, vast data access with put self-sufficiency, and
avoidance of advantages costs on hardware, programming,
and staff frameworks of help, etcetera While distributed
computing make these compensation more captivating
than some other time in ongoing memory, it also passes on
new and testing security risks to customers' outsourced
data. As organization providers (CSP) are part
administrative components, data outsourcing is truly
surrendering customer's last control more than the fate of
their data. As an issue of first significance, in spite of the
way that the structures underneath the are altogether
more powerful and trustworthy than individual enlisting
devices, they are still before the broad assortment of both
inside and outside risks for data respectability.
1.1 Scope of the project1
As rapid systems and omnipresent Internet get to wind up
accessible as of late, numerous administrations are given
on the Internet to such an extent that clients can utilize
them from anyplace whenever. Information vigor is a
noteworthy prerequisite for capacity frameworks. There
have been numerous proposition of putting away
information over.
1.2 Need for the project 2
As a problematic innovation with significant ramifications,
processing is changing the plain idea of how organizations
utilize data innovation. One essential part of this outlook
changing is that information Are being brought together or
outsourced to the . From clients' point of view, including
the two people and IT ventures, putting away information
remotely to the in an adaptable on-request way brings
engaging advantages: alleviation of the weight for capacity
administration, general information access with area
freedom, and evasion of capital consumption on
equipment, programming, and work force systems for
upkeeps, and so on.

2. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 06 Issue: 04 | Apr 2019 www.irjet.net p-ISSN: 2395-0072
© 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 3349
2. EXISTING SYSTEM
In open condition, most customers transfer their
information to PCS and check their remote information's
trustworthiness by Internet. At the point when the
customer is an individual administrator, some reasonable
issues will happen. The calculation overhead of
confirmation by the inspector directly increments with the
extent of the checked informational index. Here outsider
open inspecting plan for the recovering code-based
capacity. To take care of the recovery issue of fizzled
authenticators without information proprietors, if these
information can't be handled in the nick of time, the
supervisor will confront the loss of financial intrigue. In
request to keep the case happening, the supervisor needs
to designate the intermediary to process its information. In
PKI (open key foundation), remote information
uprightness checking convention will play out the
declaration administration. When the director appoints a
few elements to play out the remote information honesty
checking, it will bring about impressive overheads since
the verifier will check the authentication when it checks
the remote information trustworthiness.
2.1 LITERATURE SURVEY
A) ON THE KNOWLEDGE SOUNDNESS OF A
COOPERATIVE PROVABLE DATA POSSESSION SCHEME
IN MULTICLOUD STORAGE
AUTHOR: Huaqun Wang and Yuqing Zhang
YEAR: 2014
DESCRIPTION: Provable data possession (PDP) is a
probabilistic proof technique for cloud service providers
(CSPs) to prove the clients’ data integrity without
downloading the whole data. The existence of multiple
CSPs to cooperatively store and to maintain the clients’
data is studied. Then, based on homomorphic verifiable
response and hash index hierarchy, a cooperative PDP
(CPDP) scheme from the bilinear pairings is presented.
This scheme satisfied the security property of knowledge
soundness. It shows that any malicious CSP or the
malicious organizer (O) can generate the valid response
which can pass the verification even if they have deleted
all the stored data, i.e., Then, we discuss the origin and
severity of the security flaws. It implies that the attacker
can get the pay without storing the clients’ data. It is
important to clarify the scientific fact to design more
secure and practical CPDP scheme in Zhu et al.’s system
architecture and security model CPDP scheme cannot
satisfy the property of knowledge soundness. Then, the
origin and severity of the security flaws is discussed. It
implies that the attacker can get the pay without storing
the clients’ data. It is important to clarify the scientific fact
to design more secure and practical CPDP scheme in Zhu et
al.’s system architecture and security model.
B) IDENTITY-BASED DISTRIBUTED PROVABLE DATA
POSSESSION IN MULTICLOUD STORAGE
AUTHOR: Huaqun Wang
YEAR: 2015
DESCRIPTION: Remote data integrity checking is of
crucial importance in cloud storage. It can make the clients
verify whether their outsourced data is kept intact without
downloading the whole data. In some application
scenarios, the clients have to store their data on multi-
cloud servers. At the same time, the integrity checking
protocol must be efficient in order to save the verifier’s
cost. From the two points, we propose a novel remote data
integrity checking model: ID-DPDP (identity-based
distributed provable data possession) in multi-cloud
storage. Based on the bilinear pairings, a concrete ID-DPDP
protocol is designed. The proposed ID-DPDP protocol is
provably secure under the hardness assumption of the
standard CDH (computational Diffie- Hellman) problem.
Besides of the elimination of certificate management, our
ID-DPDP protocol has also flexibility and high efficiency.
Based on the client’s authorization, the proposed ID-DPDP
protocol can realize private verification, delegated
verification and public verification.
3. PROPOSED SYSTEM
An efficient cloud scheme with data in been made. Here we
are using the erasure code technique for distribute the
data to locations and access the data from. User can
register and login into their account. Provided an option to
store, share and access the data from storage. Here we are
using the double ensured scheme for storing data into the.
Cloud. First is your data or file split into multiple parts and
it will store into different server locations. Each and every
file generates the key-code for auditing. Then second is
each and every split file will encrypt before store into
different locations. The shared users can edit the file in the
with file owner’s permission. That file eligible of own
public auditing. Search and download the files, at the time
of download user should use the security key. As an
authentication success it will be decrypt and combine to
get the original data from. Moreover, we design a novel
public verifiable authenticator, which is generated by a
couple of keys and can be regenerated using partial keys.
Thus, our scheme can completely release data owners
from online burden. In addition, we randomize the encode

3. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 06 Issue: 04 | Apr 2019 www.irjet.net p-ISSN: 2395-0072
© 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 3350
coefficients with a pseudorandom function to preserve
data privacy. Extensive security analysis shows that our
scheme is provable secure under random oracle model and
experimental evaluation indicates that our scheme is
highly efficient and can be feasibly integrated into the
regenerating code- based storage.
3.1 SYSTEM DESIGN
FIG-1: SYSTEM ARCHITECTURE
3.2 MODULES
• User Plug in
• Uploading File
• Secret Key Formation
• File Allocation Process
• File analyzing
• File Loading process
• Alert Mail
3.3 MODULE DESCRIPTION
USER PLUG-IN: In our Secure System we have a user
friendly user interface to interact with our System. Every
Act dual role as a data owner and data consumer while
uploading file they are the owner of that file if they search
other’s file than they are the consumer. Users can create
the account them self for that we have new pages, in that
page we will get the details from the user and we generate
the account for the user’s. We have authentication system;
we only allow authorized users to access our System. In
our System we providing the easy file searching user’s
don’t want to keep remember all uploaded file’s exact
name, for that we have given the keywords while
uploading the files it will help to search the file easily.
UPLOADING FILE: Storing data over storage servers one
way to provide data robustness is to replicate a message
such that each storage server stores a message. Another
way is to encode a message of k symbols into a codeword
of n symbols by erasure coding. To store a message, each
of its codeword symbols is stored in a different storage
server. A storage server corresponds to an erasure error of
the codeword symbol. As long as the number of servers is
under the tolerance threshold of the erasure code, the
message can be recovered from the codeword symbols
stored in the available storage servers by the decoding
process.
SECRET KEY FORMATION: Firstly the secret key will be
generated as the initial step while uploading the file, every
which is uploaded, will have unique secret key. This key
will be taken as an identification of every file. The secret
key which we are using is a three digit number we will
make it use for both uploading and downloading. If the
user want download some file and if he gives the download
request the secret key of that file will be sent to the file
owner of the file maybe he can share it.
FILE ALLOCATION PROCESS: In our application we can
share a file to a registered user by providing basic
credentials, with the sharing option it is necessary to
provide authority to the shared user whether to view or
edit the file. A user can view the shared file within the
application without downloading it and the same is
possible with the edit option.
FILE ANALYZING: Auditing is the process of checking the
file whether the original contents of the file is changed.
This module provides the file owner auditing, this we
achieve by generating tokens. The tokens are generated
with the ASCII values of the characters in the file and these
characters are stored in the DB while uploading the file. If
a shared user edit’s the file and saves it, again a new token
will be generated and stored in the DB. If the initial token
and the current token aren’t same then a notification will
be sent to the file owner.
FILE LOADING PROCESS: File downloading process is to
get the corresponding secret key to the corresponding file
to the user mail id and then decrypt the file data. The file
downloading process re-encryption key to storage servers
such that storage servers perform the re-encryption

4. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 06 Issue: 04 | Apr 2019 www.irjet.net p-ISSN: 2395-0072
© 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 3351
Operation. The length of forwarded message and the
computation of re-encryption is taken care of by storage
servers. Proxy re-encryption Schemes significantly reduce
the overhead of the data Forwarding function in a secure
storage system.
Alert Mail: The uploading and downloading process of the
user is first get the secret key in the corresponding user
email id and then apply the secret key to encrypted data to
send the server storage and decrypts it by using his secret
key to download the corresponding data file in the server
storage system’s the secret key conversion using the Share
Key Gen (SKA, t, m). This algorithm shares the secret key
SKA of a user to a set of key servers.
3.4 SCREENSHOTS
FIG-2: REGISTRATION PAGE
FIG-3: LOGIN PAGE
FIG-4: FILE UPLOADING PAGE
CONCLUSION
A protection saving open examining framework for
information stockpiling security in processing. We use the
homomorphism straight authenticator and arbitrary
concealing to ensure that the TPA would not take in any
information about the information content put away on
the server amid the effective inspecting process, which not
just wipes out the weight of client from the dreary and
perhaps costly examining assignment, yet in addition
reduces the clients' dread of their outsourced information
spillage. Considering TPA may simultaneously deal with
various review sessions from various clients for their
outsourced information records, we additionally expand
our security protecting open examining convention into a
multiuser setting, where the TPA can play out numerous
evaluating undertakings in a bunch way for better
effectiveness.
FUTURE ENHANCEMENT
We additionally expand our protection safeguarding open
evaluating convention into a multi client setting, where the
TPA can play out different examining errands in a cluster
way for better productivity. In imminent we will enhancing
the execution. In this framework we utilized just content
records, In future we will incorporate the picture, sound,
video documents. In our framework the OTP sent to
proprietor mail id, coming up the customer will get the
OTP on portable by utilizing the versatile number.
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5. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 06 Issue: 04 | Apr 2019 www.irjet.net p-ISSN: 2395-0072
© 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 3352
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